23129625440 has 24 divisors (see below), whose sum is σ = 54643740480. Its totient is φ = 9251850112.

The previous prime is 23129625403. The next prime is 23129625479. The reversal of 23129625440 is 4452692132.

It is a junction number, because it is equal to n+sod(n) for n = 23129625394 and 23129625403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72279920 + ... + 72280239.

It is an arithmetic number, because the mean of its divisors is an integer number (2276822520).

Almost surely, 2^23129625440 is an apocalyptic number.

23129625440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23129625440 is an abundant number, since it is smaller than the sum of its proper divisors (31514115040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23129625440 is a wasteful number, since it uses less digits than its factorization.

23129625440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144560174 (or 144560166 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 23129625440 in words is "twenty-three billion, one hundred twenty-nine million, six hundred twenty-five thousand, four hundred forty".